Autoignition Temperature Data for Methanol, Ethanol, Propanol, 2-Butanol, 1-Butanol, and 2-Methyl-2,4-pentanediol

Although autoignition temperature (AIT) is indispensable information to safely handle and operate flammable substances, the Ails reported in different data compilations are, however, very diverse. In this work, the AITs of six frequently used alcohols are measured in compliance with the ASTM E659 method. The measured AITs are (433.1 +/- 8.7) degrees C, (368.8 +/- 7.4) degrees C, (380.0 +/- 7.6) degrees C, (397.1 +/- 8.0) degrees C, (314.0 +/- 6.3) degrees C, and (409.8 +/- 8.2) degrees C for methanol, ethanol, propanol, 2-butanol, 1-butanol, and 2-methyl-2,4-pentanediol, respectively. It is found that the AIT reported in DIPPR 2009 is beyond the reproducibility in cases of ethanol, 1-butanol, and 2-methyl-2,4-pentanediol, and the difference is up to 104 degrees C in the case of 2-methyl-2,4-pentanediol. The International Programme on Chemical Safety's (IPCS) INCHEM service reports the AIT beyond the reproducibility in methanol, 1-butanol, and 2-methyl-2,4-pentanediol with differences of 33 degrees C, 31 degrees C, and 104 degrees C, respectively. The Sax's dangerous properties of industrial materials only report the AIT of 2-butanol within the reproducibility. The Chemical Database reports the AIT of all investigated chemicals within the reproducibility except for the propanol with the difference of 32 degrees C which is only a little bit beyond the reproducibility.